Antifreeze device for water pipes



Dec. 5, 1933- w. w. PARSLEY ET AL ANTIFREEZE DEVICE FOR WATER PIPES Filed May 27, 1931 Patented Dec. 5, 1933 UNITED STATES ANTIFREEZE DEVICE FOR WATER PIPES William W. Parsley and John Wiley Welch, Oklahoma City, Okla.

Application May 27, 1931. Serial Nb. 540,468 j 1 Claim.

,The principal object of the invention is the provision of a device which will automatically drain off all water in the pipes whenever the flow I of water is stopped, thus preventing the freezing of the water and the usually resulting burst pipes.

This device will be particularly useful at gasoline filling stations where water is needed for instant use the year round, but must nevertheless be kept from freezing in the pipes and hose so that the water may be delivered to radiators and the like.

Other objects and advantages will appear in the following specification and the novel features of the invention will be particularly pointed out in the appended claim.

Our invention is illustrated in the accompanying drawing, in which:

Figure 1 is a vertical view partly broken away,

and Figure 2 is a sectional view taken along line 22 of Figure 1.

Referring more particularly to the drawing,

we have shown therein our device consisting of a cylinder 1, having a lower cover 2 and an upp'er cover 3. Centrally depending from the lower cover 2 is a valve housing 4, hereinafter more fully referred to. r

The upper cover 3 has a central hub 5 internally threaded to receive the lower end of acasing 6.

' At the upper end of the casing a bracket 7 is attached by means of an integral ring portion 8 which surrounds the said casing. Mounted above and below the ring portion 8 is a pair of rings 9 having set screws 10 for firmly fixing the bracket 7 in position. The bracket 7 is further held in position by the provision of a shoulder 11 in the casing. To the bracket 7 is pivotally connected a link 12 which is also pivotally connected to one end of an operating lever 13, which is, in turn, pivotally connected near its center to an L- joint 14 and protrudes outwardly to form a support for a delivery hose 15 which is connected to the L-joint 14. The L-joint is also threaded to one end of an internal pipe 16, extending downwardly through the casing 6 and for a short distance through a piston 17 to which it is fixedly attached. The piston 17 is located in the cylinder 1 in the usual position. The hose 15 usually formed of rubber passes through the hollow lever .13 and is enclosed by the lever substantially throughout its length so that the lever and hose approximate a unitary movable structure.

A valve operating cap 18is threaded to the projecting end of the pipe 16. The cap is provided with openings 19 communicating with the .erating cap 18 downwardly until the tip 20ofinterior of the pipe 16, and has a downwardly projecting tip 20 adapted to unseat a ball valve, 21 mounted in the housing 4 when forced into engagement therewith.

The piston 17 preferably, consists of a leather disk 22 having an upturned flange and a like disk 23 having a downwardly turned flange. These disks are clamped between a pair of circular plates 24 by means of bolts 25. 0n the inside of casing 6 and preferably cast integral therewith'is a flange 26. A washer 27 is fixedly mounted on the pipe 16, and a coil spring 28 is placed between the flange 26 and the washer 27. The device is connected to a water main 29 by threading the lower end of the valve housing 4 thereto. v

The operation of the device is as follows: When water is needed, a person operating the device will press down upon the lever 13 causing the pipe 16 to move the piston 17 and valve opthe cap unseats the ball valve 21. The pressure in the main 29 will cause the water to flow through the valve, through the openings 19 in the'cap 18, into the pipe 16 and thence into the hose 15. This flow of water 'continuesuntil the operator releases the pressure upon the lever 13, when the action of the spring 28 causes an upward movement of the parts aforementioned. The ball valve 21 automatically cuts off further flow of water from the main and the upward movement of the piston causes a vacuum to be cre-' ated in that part of the cylinder between the r lower cover 2 and the piston 1'7, thus causing any -water remaining in the pipe 16 and hose 15 to be withdrawn into this space. As the cylinder will be located at a distance below ground level where freezing will be very improbable,lit follows that there will be little likelihood of water freezing when this device is used.

We claim as new and desire to secure by Let-, ters Patent:- An antifreeze device for water pipes comprising an underground tank, a piston slidable therein, a valve connecting the tank with a water main and adapted to benormally retained on its seat by the pressure in the main, means on the piston for causing unseating of the valve on the down stroke of the piston, a movable pipe connected to the piston, a flexible pipe connected with the movable pipe and placing the tankin communication .with'the atmosphere, a hollow lever enclosing the flexible pipe for depressing the movable pipe and likewise the piston, a casing enclosing the movable pipe and supported-W1 the tank, a bracket projecting from the upper end of said casing, anda link connecting one endof the leveriwith the bracket. 

